Machine



(No Model.) 4 Sheetsf-#Sheet 1'.

H. J. MARK., 1 VENERE CUTTING Mmmm r No..288,585. Paten-ted Nov. 13, 1883.

`(No Model.)

H J MARK vB-NEBB. CUTTING MACHINE.

Patented Nov. 13. 188B.

(Notodel.) .fisheets-sheen 3.

\ H. MARK.

VENEER CUTTING MACHINE.

' -Patented Nov. 18, 1883.)

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UNiTEe STATES" PATENT @Erica HENRY` J. MARK, on sriouis, MISSOURI, AssiGNoR or oNElHALE rro HENRY R. GAus, JR., or SAME PLAGE.

'y vx-:NEl-:R-CUTTING MACHINE. E

SPECIFICATION forming part `of Letters Patent No. 288,585, dated November 13, 18.83.

' Application filed April 7,1883. `(No model.)

. To all who/n, t may con/cern,.-

shaft; Fig. 6, a section of the knife and knifehead, Figs.- 7, 8, A9, respectively, a side elevation,a section, and a top view, of the knife; Fig. 10, a rear elevation of the machine; Fig.

` 11, a section on the line 11 11 of Fig. 3; Fig.

12, a section on the line 12 12 of Fig. 11; Fig.

1 13,V a section onV the line 13 18 of Figs. 10and chine.

14; Fig. 14,21y section on the line 14 14 of Fig.

3; Figs. 15, 16, details relating to the feed mechanism, and Fig. 17 a horizontal section on the line 17 17` of Fig. 3.

The sameletters of reference `denote the same parts.

In the present machine the knife for cutting the veneers has a reciprocatingmovement upward and downward at the front of the mamade is fed sidewise to the knife, and during the cutting the log rests upon a bed or support which is inclined to the knife-edge. The knife-guides are also inclined, to impart a shearing cut to the knife. The improvement relates also to details connected with the feed mechanism. v

A represents the frame of the machine.

B represents the`knife. It may be straight and fiat, or it may be corrugated, as shown in Figs. 7, 9. The knife is preferably made with a steel edge, b, upon an iron back, b', Figs. 8', v9. The knife is attached to a head, B', having, by means of the screws b2, an adjustable connection therewith. rlhe knife-head isv adapted to be moved upward and downward upon `the inclined ways or guides C C, Figs. 1,

D represents a pitman leading from the knife-head to the crank E upon the main shaft F, which is journaled in the bearings f f.

. knife.

The log from which the veneers are -Motion is imparted to the shaft by means of the pulley Gthereon, causing the knife to movepupward and downward. The log H, Figs. 2, 3, 17, during the cutting, rests upon `the bed I, Figs. 1, 2. This bed, as seen in The ylog is held in posi-l Fig. 1, is inclined. tion by means of the blocks J J, Figs. 3, 10, 17.

K, Figs. `1, 2, represents the adjustable gage, which moves upward and downward with the Its function is to determine the thickness of the veneer. The gage Kus connected to offsets k of the end slides of the knife-frame by means of set-screws k, which allow the gage to be moved'up to or from the plane of the knife, according to the thicknessdesired for slabbing the veneer. The downward stroke of the knife cuts the veneer from the log, and as theknife is elevated for another stroke the log is fed forward in position for a second cut as follows: The blocks J J are adapted to be moved upon the ways t' i, Figs. 3, 11, 12, 17,l

and they are, by means of the extensions j j, in engagement with the screws L L,l respectively. rIhe screws turn in the bearings Z Z ZZ,

Figs 1, 17, and they are provided with the ratchets Z Z and the bevel-gears Z272. The

gears Il ZAZ engage, respectively, with the bevell? represents a lever, that at j) is pivoted to a bearing, upon which the lever can be turned,

and at p is adapted of the lever O. l

Q Q represent pawls pivoted at q q, and by means of the springs g q oonnectedwvith the lever P. When the lever P is down, and in the position shown in Fig. 10, the springs g q act to put the pawls in engagement with the ratchets Z Z, and when the pawls are thus engaged (as shown in Figs. 13, 14, 15) the screws L L are rotated and the log fed forward, for the. rotation of the main shaft and eccentric causes the levers O P to reciprocate, the lever O turning upon the bearing o and the lever l? to engage with the pin o2 roo sliding upon the bearing p, and as the lever P is drawn to the left, as shown in Fig. 10, the pawls act to rotate the screws.

R R represent arms, which, at their lower ends, encircle the hubs Z Z, Fig. 13, of the ratchefs Z Z, and at 1' r are slotted to receive the studs p2 p2, with which the lever P is provided. The pawls Q Q are pivoted to the arms R R, respectively, and as the lever P is recip ro cated the arms R R, carrying the pawls, rock upon the hubs AZ3 Z, and meanwhile the springs q q act to keep the pawls in engagement. \V hen it is desired to arrest lthe feed- A motion, the lever P is lifted from the pin 02 I5,

and supported, say, upon the pin p4. The lever P in such case draws the points of the pawls with it, disengaging them from the ratchets, as shown in Fig. 16.

S represents a clutch adapted to slide`upon but rotating with the main shaft F. By means of the lever s the clutch is thrown into and out of engagement with the pulley G, and when in engagement the knife is in motion as well as the lever O. I

The pulleys T, Figs. 3, 10, are for withdrawing the head-blocks J J rapidly from the vicinity of the knife. The shaft m and gears M M serve to transmit the movement to the screws F F.

It will be observed that the slotted arms R R are pivoted on the hubs Z Z of shafts L, and that these arms are loosely attached by sliding studs p2 to said arms, thus allowing the free ends of the pawls Q Q, which are attached by springs to the lever P, to be raised free from thevratchets Z Z when the lever P is raised, which latter has allowed it an endwise as Well as a vertical movement.

' I claim- 1. In a vencer-cutting machine having a knife which receives a shearing motion, an

inclined bed, and an adjustable gage, the combination of the blocks J, the feed-screws L thereof, ratchets on these feed-screws,` the pawls pivoted to vibrating slotted arms, the k acter described, the combination of the shaft F, the eccentric N, and crank-arm E on this 6o shaft, the vertically-movable frame bearing the veneer-cutter guided and connected to said crank, as described, an adjustable gage, an inclined bed, the blocks J J, theiradjustingscrews, the ratchets Z Z and rocking arms, the

pawls q, lever P, the spring-connections of the pawls .with this lever, the lever O, and its pitman-rod connection with the eccentric on the main shaft F, substantially as described..

4. .The combination of the holding-block J, 7o extension j, the horizontalscrews L, the gears Z2 Z2 on the outer ends of said screws, the gears M on the ends of shaft m, which mesh with gears ZZ Z2, pulley T on shaft m, and holdingblocks J on the shaft, whereby said screws L can be made to operate the said holdingblocks, substantially as described.

HENRY J. MARK.

XVitnesses:

C. D. MOODY, H. GAUs, Jr. 

